- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
useable
-
premeditate
-
ill-treat
-
briskly
-
pop-up
-
brisk
-
acquisitive
-
excellence
-
acores
-
acrasiomycetes
- Hide translation
acorn tube
acorn tube /ˈeɪˌkɔrn tuːb/
noun
-
A small vacuum tube; used at high frequencies
(
acorn tube
)
a small vacuum tube; used at high frequencies